HR Structural Shapes (HR Angles and Channels)

A shape is classified as a "Bar Size Shape" when its greatest dimension (excluding length) is less than 3 inches. It is a "Structural Shape") when at lease one of its dimension (excluding length) is 3 inches or greater. These shapes conform to ASTM A36 in its manufacture and mechanical tolerances. HR angle is measured by its legs dimension on the exterior and by its thickness. HR angle may be equal or unequal dimension (ie: 2 x 2 x 1/4" hr angle / 3 x 2 x 1/4" hr angle). In the designation of HR Channels, a letter or letters precedes the size and weight per foot, ie: C3 x 4.1# is the AISI designation for a channel 3" wide at its base and 4.1 pounds weight per foot standard structural channel. "C" shapes are channels produced in accordance with dimensional standards adopted in 1896 by the Association of American Steel Manufacturers for American Standard channels. The essential part of these standards is that the inside flange surfaces of American Standard channels have approximately a 16-2/3% slope. "MC" shapes are channels that cannot be classified as "C" shapes.

ANALYSIS

HR Angles and Channels conform to ASTM A36

MECHANICAL PROPERTIES

Subject to a deduction from the above percentage of elongation for thicknesses under 5/16" and over 3/4".

Above is a general properties guide that can be considered representative of HR structural shapes conforming to ASTM A36.

APPLICATIONS

Used for general structural purposes, for use in riveted, bolted, or welded construction of buildings, bridges, machinery, etc. Used for booms, rails, braces, frames, brackets, cross-members, liners, truck trailers, truck beds, racks, etc

MACHINEABILITY AND WELDABILITY

ASTM A36 has a machinability rating of 72%, based on 1212 at 100%. Average surface cutting feed 120 ft/min.
ASTM A36 is easily welded by all welding processes and the welds and joints produced are of extremely high quality.

HEAT TREATING

ASTM A36 is generally not heat treated but is typically stress relieved prior to grinding or machining or after welding and prior to machining. ASTM A-36 can be carburized, however, for a higher surface hardness.

Stress Relieve 1100°-1250°F. Typical Stress relieve soak time - one hour per inch of thickness.
Carburize 1650°-1700° F.

TOLERANCES

Section Nominal Size (in) Length of Leg (in) Thickness Out of Square

per inch of leg (in)

Variations from thickness for thicknesses given, Over and Under
Over Under3/16 and under Over 3/16 to 3/8 incl Over 3/8
ANGLES¹

(L Shapes)

1 and under 1/321/32 3/128²0.0080.010-
Over 1 to 2, incl3/64 3/643/128²0.010 0.0100.012
Over 2 to 3, excl1/16 1/163/128²0.012 0.0150.015
3 to 4, incl1/8 3/323/128²- --
Over 4 to 6, incl1/8 1/83/128²- --
Over 63/161/8 3/128²-- -

¹ For unequal leg angles, longer leg determines classification

² 2/128 in./in. = 1-1/2 degrees

Other tolerances, ie: straightness, twist, etc., per ASTM A36, ASTM A6 / A 6M specifications.

 

Section Nominal Size (in) Depth (in) Flange Width (in) T + T'†
Flanges Out of Square
max in.‡
Thickness of Web
 Over and Under for Thickness given
Over Under Over Under3/16 and under Over 3/16
C and MC Channel 1-1/2 and under 1/321/32 1/321/32 1/320.0100.015
Over 1-1/2 to 3, excl1/16 1/161/16 1/161/320.015 0.020
3 to 7, incl3/32 1/161/16 1/161/32- -
Over 7 to 14, incl1/8 3/321/8 5/321/32- -
Over 143/161/8 1/83/16 1/32--

† T + T' applies when flanges of channel are toed in or out. For channels 3/8 in. and under in depth, the permissible out-of-square is 3/64 in./in. of depth.

‡ (b) Tolerance is per inch of flange with for C and MC shapes

Other tolerances, ie: straightness, twist, etc., per ASTM A36, ASTM A6 / A 6M specifications.

SPEEDY METALS ITEMS

1.500" Wall x x 1.500" Wall x x
2" x 5/8" x 0.250" 2" x 2-1/2" x 3/8" 2-1/2" x 3-1/2" x 1/2"
3" x 6" x 0.375" 3.500" x x 3.500" x x
3.500" x 5" x 5/8" 4" x 6" x 5/8" 6" x 6" x .313"
1/8" {A} x 1/2" {B} x 1/2" {C} Angle, A-36 Hot Rolled Stee 1/8" {A} x 3/4" {B} x 3/4" {C} Angle, A-36 Hot Rolled Stee 1/8" {A} x 1" {B} x 1" {C} Angle, A-36 Hot Rolled Stee
3/16" {A} x 1" {B} x 1" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 1" {B} x 1" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 1-1/4" {B} x 1-1/4" {C} Angle, A-36 Hot Rolled Stee
3/16" {A} x 1-1/4" {B} x 1-1/4" {C} Angle, A-36 Hot Rolled Stee 1/8" {A} x 1-1/4" {B} x 1-1/4" {C} Angle, A-36 Hot Rolled Stee 1/8" {A} x 1-1/2" {B} x 1-1/2" {C} Angle, A-36 Hot Rolled Stee
3/16" {A} x 1-1/2" {B} x 1-1/2" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 1-1/2" {B} x 1-1/2" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 1-1/2" {B} x 2" {C} Angle, A-36 Hot Rolled Stee
1/8" {A} x 1-1/2" {B} x 2" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 1-3/4" {B} x 1-3/4" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 2" {B} x 2" {C} Angle, A-36 Hot Rolled Stee
1/8" {A} x 2" {B} x 2" {C} Angle, A-36 Hot Rolled Stee 3/16" {A} x 2" {B} x 2" {C} Angle, A-36 Hot Rolled Stee 3/8" {A} x 2" {B} x 2" {C} Angle, A-36 Hot Rolled Stee
5/16" {A} x 2" {B} x 2" {C} Angle, A-36 Hot Rolled Stee 3/16" {A} x 2" {B} x 3" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 2" {B} x 3" {C} Angle, A-36 Hot Rolled Stee
3/8" {A} x 2" {B} x 3" {C} Angle, A-36 Hot Rolled Stee 3/8" {A} x 2-1/2" {B} x 2-1/2" {C} Angle, A-36 Hot Rolled Stee 3/16" {A} x 2-1/2" {B} x 2-1/2" {C} Angle, A-36 Hot Rolled Stee
1/4" {A} x 2-1/2" {B} x 2-1/2" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 2-1/2" {B} x 2-1/2" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 2-1/2" {B} x 3" {C} Angle, A-36 Hot Rolled Stee
1/4" {A} x 2-1/2" {B} x 3" {C} Angle, A-36 Hot Rolled Stee 3/8" {A} x 3" {B} x 3" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 3" {B} x 3" {C} Angle, A-36 Hot Rolled Stee
3/16" {A} x 3" {B} x 3" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 3" {B} x 3" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 3" {B} x 4" {C} Angle, A-36 Hot Rolled Stee
1/4" {A} x 3" {B} x 4" {C} Angle, A-36 Hot Rolled Stee 3/8" {A} x 3" {B} x 4" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 3" {B} x 5" {C} Angle, A-36 Hot Rolled Stee
5/16" {A} x 3" {B} x 5" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 3" {B} x 5" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 3-1/2" {B} x 3-1/2" {C} Angle, A-36 Hot Rolled Stee
1/4" {A} x 3-1/2" {B} x 3-1/2" {C} Angle, A-36 Hot Rolled Stee 3/8" {A} x 3-1/2" {B} x 6" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 4" {B} x 4" {C} Angle, A-36 Hot Rolled Stee
3/4" {A} x 4" {B} x 4" {C} Angle, A-36 Hot Rolled Stee 1/4" {A} x 4" {B} x 4" {C} Angle, A-36 Hot Rolled Stee 3/8" {A} x 4" {B} x 4" {C} Angle, A-36 Hot Rolled Stee
3/8" {A} x 4" {B} x 6" {C} Angle, A-36 Hot Rolled Stee 3/4" {A} x 4" {B} x 6" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 4" {B} x 6" {C} Angle, A-36 Hot Rolled Stee
1/2" {A} x 4" {B} x 7" {C} Angle, A-36 Hot Rolled Stee 3/8" {A} x 4" {B} x 7" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 4" {B} x 8" {C} Angle, A-36 Hot Rolled Stee
1/2" {A} x 5" {B} x 5" {C} Angle, A-36 Hot Rolled Stee 1/2" {A} x 6" {B} x 6" {C} Angle, A-36 Hot Rolled Stee 3/4" {A} x 6" {B} x 6" {C} Angle, A-36 Hot Rolled Stee
3/8" {A} x 6" {B} x 6" {C} Angle, A-36 Hot Rolled Stee 3/4" {A} x 6" {B} x 8" {C} Angle, A-36 Hot Rolled Stee 6" {A} x 2.034" {B} x 0.314" {C} Channel, 10.5lb/ft A-36 Hot Rolled Stee
8" {A} x 2.260" {B} x 0.220" {C} Channel, 11.5lb/ft A-36 Hot Rolled Stee 6" {A} x 2.497" {B} x 0.310" {C} Channel, 12lb/ft A-36 Hot Rolled Stee 8" {A} x 2.343" {B} x 0.303" {C} Channel, 13.75lb/ft A-36 Hot Rolled Stee
6" {A} x 2.157" {B} x 0.437" {C} Channel, 13lb/ft A-36 Hot Rolled Stee 10" {A} x 2.600" {B} x 0.240" {C} Channel, 15.3lb/ft A-36 Hot Rolled Stee 6" {A} x 3.500" {B} x 0.340" {C} Channel, 15.3lb/ft A-36 Hot Rolled Stee
9" {A} x 2.485" {B} x 0.285" {C} Channel, 15lb/ft A-36 Hot Rolled Stee 8" {A} x 2.527" {B} x 0.487" {C} Channel, 18.75lb/ft A-36 Hot Rolled Stee 8" {A} x 2.978" {B} x 0.353" {C} Channel, 18.7lb/ft A-36 Hot Rolled Stee
6" {A} x 3.504" {B} x 0.379" {C} Channel, 18lb/ft A-36 Hot Rolled Stee 10" {A} x 2.886" {B} x 0.526" {C} Channel, 25lb/ftA-36 Hot Rolled Stee 15" {A} x 3.400" {B} x 0.400" {C} Channel, 33.9lb/ft A-36 Hot Rolled Stee
3" {A} x 1.410" {B} x 0.170" {C} Channel, 4.1lb/ft A-36 Hot Rolled Stee 10" {A} x 4.321" {B} x 0.796" {C} Channel, 41.1 lb/ft A-36 Hot Rolled Stee 4" {A} x 1.584" {B} x 0.184" {C} Channel, 5.4lb/ft A-36 Hot Rolled Stee
3" {A} x 1.498" {B} x 0.258" {C} Channel, 5lb/ft A-36 Hot Rolled Stee 5" {A} x 1.750" {B} x 0.190" {C} Channel, 6.7lb/ft A-36 Hot Rolled Stee 3" {A} x 1.596" {B} x 0.356" {C} Channel, 6lb/ft A-36 Hot Rolled Stee
3" {A} x 1.938" {B} x 0.312" {C} Channel, 7.1lb/ft A-36 Hot Rolled Stee 4" {A} x 1.721" {B} x 0.321" {C} Channel, 7.25lb/ft A-36 Hot Rolled Stee 6" {A} x 1.920" {B} x 0.200" {C} Channel, 8.2lb/ft A-36 Hot Rolled Stee
8" {A} x 1.875" {B} x 0.180" {C} Channel, 8.5lb/ft A-36 Hot Rolled Stee 5" {A} x 1.885" {B} x 0.325" {C} Channel, 9lb/ft A-36 Hot Rolled Stee 1" {A} x .500" {B} x 0.125" {C} Channel, A-36 Hot Rolled Stee
1-1/4" {A} x .500" {B} x 0.125" {C} Channel, A-36 Hot Rolled Stee 1-1/2" {A} x .500" {B} x 0.125" {C} Channel, A-36 Hot Rolled Stee 2" {A} x 1" {B} x 0.125" {C} Channel, A-36 Hot Rolled Stee
2" {A} x 1" {B} x 0.188" {C} Channel, A-36 Hot Rolled Stee